Feature extraction network. We investigate the impact of architectures of the feature extraction network in Table REF . Following LPIPS [1]}, we replace our extraction network with several classic architectures, including AlexNet [2]}, I3D [3]}, and ours-3D network. We use the official implementation of AlexNet and I3D [3]}. For ours-3D, we replace the Conv2D layers in our feature extraction module with Conv3D layers with \(3\times 3\times 3\)  kernels. We measure the runtime for a 12-frame \(256\times 256\)  video on a single Nvidia RTX A5000 GPU.
